Weekly physical activity patterns as measured by pedometer in (A) February, (B) May, (C) July and (D) December. The pattern shown for February and May was similar to that observed in January, March, April and June (not shown). There were no data obtained for August-November. Steps/day on Sunday were significantly lower than the rest of the week in February and May. In July, there was no effect of weekday on steps/day. In December, steps/day were significantly higher on Saturday. Data are means ± 95% CI.